Still



March 15,1927. H'EGILBERT n y 1,621,319

, STILL Filed March 42O, 1925 3 Sheets-Shea??l 2 Patented 15, 1927.

Hanna' n. GILBERT, or janine-EPORT,- cormnorrco'r.

STILL.

Application mea March 2o, 1925. serial No. 16,906;

Fig. 1 is a front view of a still constructed in accordance with myinvention. t

Fig. 2 is a transverse sectional view of the same.

Fig. 3 is a side view, partly in section.

Fig. 4 isa plan view, with Ythe container removed.

Fig. 5 is a broken, sectional view of'one end of a tubular container.

Y This invention relates to improvement'in stills particularly adaptedfor retningpetroleum or chemical compounds. In treating material in astill, itis' desirable that the heat should be evenly developed beneaththe container, and the object of this invention is.to so form the top ofthe lire-box that the heat, as it reaches the container, will beequalized, and the invention consists 1n the construction as hereinafterdescribed and'l particularly recited in the claims. v

In carrying out my invention, I employ a container 10, herein shown (inFig. 3) as a long, cylindrical container, suitably supported betweenside walls 111 and 12, so as to form a chamber 13 between the bottom ofthe container and the top of theiire-box 14. This top of the fire-box isdivided into a plurality of sections, herein vrepresented as three 'finnumber. The first zone 15 is formed from siliceous material i-n one ofits various forms, and is relatively thick, so

as to resist radiation of heat `from the, front part of the fire-boxWhere the burner enters, 'preferably7 through a mouth 16. The secondzone 17 1s comparatively thin and formed from siliceous material, whilethe third zone 18 is formed with a series of openings 19, through whichflames from the burner' may directly pass into the chamber 13, throughwhich they extend forward into the flue 20.

The section 15, which tends to resist radiation, is over the frontportion of the fire-box, where the greatest heat exists; the zone 17over the central part, where there is less degree of heat, but beingrelatively thin, will give the desired radiation into .the chamber 13;while the zone 18, provided with holes, permits the direct action of theflames against the rear part of the container, and by thus passingforward, equalizes the heat in the chamber 13, sov as to maintainsubstantially the same temperature throughout the length of thecontainer.

As herein shown, the fire-box is divided by longitudinal partition v2lforming two separate fire-boxes, and it is obvious, without.

illustration, that the ynumber of lire-boxes may be increased asdesired, according to the size of the container. But in every case,

the top of the lire-box or boxes will be.

formed in zones, giving different degrees of radiation into thecontainer-chamber, and it is also obvious that more than three zoneslmight be employed of different substances, so as to' vary the radiationand equalize the heat in the container-chamber.

Instead of using a cylindrical container, Ivrmay use a tubularcontainer, as shown in Fig. 5 ofy the drawings, which, like a tubularboller, has a plurality of tubes 23 mounted in headers 24, and throughwhich tubes the material to be heated will circulate.

As before stated, any approved form of burner -may be employed, but inany case, the top of the fire-box will .have dierential radiantproperties upward toward the surface ofv the container 1n asubstantially-direct line. At the same ti'me, provision is made for apractically perfect consumption of the uel used in heatlng.

I claim: v

1. In a still, the combination of a container substantially horizontallydisposed, a fireb'ox having a top in. spaced relation to the bottom ofthecontainer, a burner at the forward end ofthe irebox, the top of theirebox being divided in zones of heat-conducting ualities of. variousdegree, the zone nearest t e burner being the least heat-conconductingand the zones more remote from the burner` progressively reaterheat-conducting, for the purpose o making the said top uniformi radiant.Y

2. In a stil, the combination of a con'- tainer substantiallyhorizontally disposed, la firehox having a top in spaced relation to thebottom of the container, a lburner at the forward endof the irebox, thetopof the irebox being divided in zones of heat-conducting qualities of.various degree, the zone nearest ythe'burner being the leastheat-conducting, the zones more remote from the burner progressivelygreater heat-conducting, and those furthest removed from the burner{toi-med withperforations, for the purpose of making the ,said topuniformly radiant.

'3. In a still, the combination of a container, a iirebox having a top.in spaced relationto the bottom of the container, the said containerbeing substantially horizontally disposed and being supported abovemaiala the said rebox sowas to form. a Chamber between them, a burnerai; tbe forward end of the rebox', 'tbetop of the irebox being;

- divided in zones of heat-conducting qualities vpose of making; thesaid top uniformly radiant.

Lin a stili, the combination of a container substantially horizonaiiydisposed, a

Lemme rebox having a top lin spaced relation to the bottom of thecontainer, a burner at the -iforward end of the firebox, theop of theiirebox being divided in three zones, lthe zone nearest the burner beingrelabivelyl thick, the zone adjacent to it and. further away from theburner being relatively thin,

and" the zone furthest removed from the burner formed withperforations.,

In testimony whereof, have signed this specification, A

HARRY E. GUJBEET.

